The button cell is a kind of housing which has a cup and the casing. The bottom edge creates an opening between the bottom of the cell and the casing. Also, there is a top and cell top. The housing contains an electrode-separator winding. This assembly includes a multi-layer structure that is wound in a spiral shape around an axis. It also has the ability to separate two electrodes, a negative and positive one. An insulator is placed between the end of an electrode-separator’s winding and the first conductor for output. The initial output conductor is then welded to the flat bottom or top surface.

A button cell’s housing typically consists of two housing pieces, a cup, and an upper. As an example they can be made using deep-drawn nickel-plated metal as stamped and drawn parts. The cell cup normally haspositive polarity, and the housing top has negative polarity. The housing may contain widely different electrochemical systems, such as for instance, zinc/MnO.sub.2, primary and secondary lithium systems, or secondary ones such as nickel/cadmium or nickel/metalhydride.

By way of example rechargeable button cells based on nickel/metal hydride or lithium-ion systems are currently in wide use. The lithium-ion button cell’s electrochemically active elements don’t normally fit in the housing as electrodes. Instead they are placed in tablets that are separated by the separator. Instead, the electrode-separator assemblies prefabricated are preferably placed flat in the housing. In that case, a porous plasticfilm is most often used as a separator, onto which the electrodes are laminated or adhesively bonded flat. The entire assembly comprising electrodes and separator typically are a maximum of a few hundred .mu.m. In order to allow buttons with normal dimensions to be filled, several of such assemblies are therefore often laid flat over the other. This allows stacks with any height that is desired and width to be created, each case matched to the dimensions of the button cell housing in which the stack is to be installed. This ensures the best utilization of the space of the housing.

There are however some problems with buttons that have stacks of assembly assemblies made up of electrodes and separators. It is crucial that electrodes with identical polarities be joined within the stack before they come into contact. The cost of materials is excessive due to the necessity of electrical contacts. Furthermore, they occupy an area that is not suitable for the active material. In addition, the production of the electrode stacks can be complicated and expensive since faults are likely to occur when the components come into contact with one another, increasing the scrap rate. On the other hand, it has beenfound that buttons with a stack of electrodes and separators very quickly start to leak.

Traditionally, button cells are sealed in a liquid-tight manner by putting the edge of the cell cup on the edge of the cell top and utilizing the use of a plastic ring which is arranged between the cell cup and the top of the cell and simultaneously serves as a sealant and also for electrical insulation of the cell cup and of the cell top. These button cells are described in DE 31 13 309.

It can also be possible to make button cells where the cup of the cell and the top of the cell are connected in the axial direction only by a force-fitting connection, and that do not include beaded-over-cup edge.Button cells like these and methods for their production are described in German Patent Application 10 2009 017 514. The button cells, regardless of their many advantages, can not be loaded in the same direction as other button cells, without beading. This is due to the mechanical loads that are produced in the internals of the button cells. For example the electrodes in rechargeable lithium-ion systems are constantly subject to changes in their volume in the course of charging and discharging. The axial forces which occur in this scenario can of course, lead to leaks much more easily when it comes to button cells with no beading rather than button cells that have beading.

It may be beneficial to provide a button cell in which the problems mentioned above do not occur or are only present in a lesser degree. It is possible to create a button that is more resistant to mechanicalloads as compared to traditional button cells. This is particularly true in the case of button cells made without a cup edge.

The present invention provides a button cell, including: a housing, the housing including: a cell cup, the cell cup having a flat bottom area, a cell cup casing, and a bottom edge forming a transition between the flat bottom area and the cellcup casing, and a cell top, the cell top having a flat top area, a cell top casing, and a top edge forming a transition between the flat top area and the cell top casing; an electrode-separator assembly winding disposed within the housing, theelectrode-separator assembly winding including a multi-layer assembly that is wound in a spiral shape about an axis, the multi-layer assembly including: a positive electrode formed from a first metallic film or mesh coated with a first electrodematerial, a negative electrode formed from a second metallic film or mesh coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode; a first output conductor connected to the firstmetallic film or mesh, wherein the first output conductor at least partially lies flat between (i) an end face of the electrode-separator assembly winding and (ii) a first of the flat bottom area or the flat top area; and an insulator disposed betweenthe end face of the electrode-separator assembly winding and the first output conductor, wherein the first output conductor is welded to the first of the flat bottom area or the flat top area.

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A patent is granted by the government to protect an invention a patent provides the inventor with exclusive rights to create, use to sell, and promote the invention?society gains when a new technology is brought to the market. These benefits may be realized immediately by people who are able to achieve previously impossible feats and indirectly by the opportunities for economic growth that innovation offers (business expansion, job creation).

Many drug companies and researchers at universities seek patent protection to protect their research and development. A patent can cover a physical or abstract product or process or a method or composition of material that are new to the field. To be granted protection by patent, an invention must be innovative, novel, and not obvious to others within the same field.

Patents give inventors a chance to be recognized for commercially successful inventions. They are an incentive to inventors to invent. Patents permit entrepreneurs and inventors to know that there’s an excellent chance that they will be paid back on their time, effort, and money invested in technology development. It means that they can earn money from their work.

Businesses with the ability to:

Protect your innovative products and services.

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Investors who are involved in the development and commercialization of technology will find small companies with patent protection appealing.

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Startups require a carefully-crafted business plan that builds on the IP to demonstrate that your product or service is distinctive and innovative, superior, or superior. Additionally, investors will be impressed when you show that your IP rights are secured or are in progress of being secure and that they align with your business strategy.

It is crucial to keep an invention secret until you submit for patent protection. It is essential to keep an invention secret prior to filing for patent protection. The public disclosure of an invention can make an invention and make it patent-infringing. Therefore, pre-filing disclosures (e.g., for test-marketing investors, investors, or for other business partners) should only be filed after signing a confidentiality agreement.

There are a variety of patents and knowing these is vital to safeguard your invention. Patents for utility cover processes and machine creations. Design patents cover ornamental designs. Patents for utility are the most effective since they protect the owner from copycats and other competitors. They are typically issued to improve or alter existing inventions. They can also be used to enhance or alter existing inventions. For instance, a process patent covers acts or methods for performing an action, while chemical compositions will comprise an assortment of ingredients.

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Patent searches are essential when you’re writing a patent application. This allows you to look at other ideas and give you an understanding of the potential of them. This allows you to restrict the extent of your invention. Also, you can find out about the technological advancements in the field you’re inventing. This will assist you in know the extent of your invention as well as prepare you for the filing of the patent application.

How to Search for Patents

A patent search is the first step in obtaining your patent. You can do a google patent search or do a USPTO search. Once the patent application is submitted, the product that is that is covered by the patent application could be described as patent-pending. you can locate the patent application on public pair. After the patent office has approved the application, you will be able to do a patent number search to locate the patent. Your product is now patented. You can also use the USPTO search engine. Check out the following article for more information. For assistance, consult an attorney who specializes in patents. In the US, patents are issued by the US patent and trademark office or the United States patent and trademark office, which also examines trademark applications.

Interested in finding more similar patents? Here are the steps to follow:

1. Create a list of terms for your invention in relation to its intended and composition or use.

Start by writing down a succinct detailed description of your idea. Do not use generic terms like “device”, “process” or “system”. Consider synonyms for the terms you chose initially. Next, note important technical terms as well as keywords.

To help you recognize keywords and concepts, use the following questions.

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  • What are the technical terms and keywords that describe an invention’s nature? A technical dictionary can assist you to find the appropriate terms.

2. These terms allow you to find pertinent Cooperative Patent Classifications at Classification Search Tool. If you’re unable to determine the correct classification for your invention, scan through the classification’s class Schemas (class schedules). If you don’t get any results from the Classification Text Search, you might consider substituting your words to describe your invention using synonyms.

3. Go through the CPC Classification Definition for confirmation of the CPC classification you have found. The link to a CPC classification definition will be given if the chosen classification title is a blue square with a “D” on the left. CPC classification definitions will assist you in determining the classification’s scope so that you can pick the one that is the most relevant. These definitions may also include search tips or other suggestions that could be helpful for further investigation.

4. The Patents Full-Text Database and the Image Database allow you to search for patent documents that have the CPC classification. You can search and select the most relevant patent documents by focusing first on the abstract and the drawings that are representative.

5. This selection of patent publications is the best to look at for any similarity to your invention. Be sure to read the specification and claims. You may find additional patents by referring to the patent examiner as well as the applicant.

6. You can retrieve published patent applications that fit the CPC classification you picked in Step 3. It is also possible to use the same search strategy that you utilized in step 4 to limit your results to the most relevant patents by reading the abstracts as well as the drawings on each page. The next step is to review every patent application that has been published with care with particular attention paid to the claims, and other drawings.

7. Find other US patents by keywords in the PatFT or AppFT databases, classification search of non-U.S. patents as described below, and searching for non-patent literature disclosures of inventions using internet search engines. For instance:

  • Add keywords to your search. Keyword searches may turn up documents that are not well-categorized or have missed classifications during Step 2. For example, US patent examiners often supplement their classification searches with keyword searches. Think about the use of technical engineering terminology rather than everyday words.
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  • Search non-patent literature. Inventions can be made public in many non-patent publications. It is recommended that you search journals, books, websites, technical catalogs, conference proceedings, and other print and electronic publications.

To review your search, you can hire a registered patent attorney to assist. A preliminary search will help one better prepare to talk about their invention and other related inventions with a professional patent attorney. In addition, the attorney will not spend too much time or money on patenting basics.